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Groups > comp.lang.python > #68443
| From | Mark Dickinson <mdickinson@enthought.com> |
|---|---|
| Subject | Re: 'complex' function with string argument. |
| Date | 2014-03-17 17:55 +0000 |
| References | <8c862bec-815e-424c-81e2-8f37ebab1c35@googlegroups.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.8210.1395078966.18130.python-list@python.org> (permalink) |
Jayanth Koushik <jnkoushik <at> gmail.com> writes:
> "Note: When converting from a string, the string must not contain whitespace
> around the central + or - operator. For example, complex('1+2j') is fine, but
> complex('1 + 2j') raises ValueError."
>
> Why is this so?
See http://bugs.python.org/issue9574 for a bit more context. To begin with,
it's not at all clear what *should* be allowed. If "1 + 2j" is valid, what
about "+ 2j"? How about "+ 2"? What about things like "+1.0 + -2.3j"?
Ultimately, I closed that issue because the proposed change seemed like
unnecessary code churn, and there wasn't a clear consensus that the change was
desirable (or even what that change should be). If it ain't broke, etc.
--
Mark
Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
'complex' function with string argument. Jayanth Koushik <jnkoushik@gmail.com> - 2014-03-15 09:26 -0700
Re: 'complex' function with string argument. Mark H Harris <harrismh777@gmail.com> - 2014-03-17 11:18 -0500
Re: 'complex' function with string argument. Chris Angelico <rosuav@gmail.com> - 2014-03-18 04:03 +1100
Re: 'complex' function with string argument. Marko Rauhamaa <marko@pacujo.net> - 2014-03-17 20:15 +0200
Re: 'complex' function with string argument. Ian Kelly <ian.g.kelly@gmail.com> - 2014-03-17 12:28 -0600
Re: 'complex' function with string argument. Chris Angelico <rosuav@gmail.com> - 2014-03-18 05:59 +1100
Re: 'complex' function with string argument. Marko Rauhamaa <marko@pacujo.net> - 2014-03-17 21:22 +0200
Re: 'complex' function with string argument. Chris Angelico <rosuav@gmail.com> - 2014-03-18 06:32 +1100
Re: 'complex' function with string argument. Steven D'Aprano <steve@pearwood.info> - 2014-03-18 04:08 +0000
Re: 'complex' function with string argument. Mark H Harris <harrismh777@gmail.com> - 2014-03-17 13:20 -0500
Re: 'complex' function with string argument. Steven D'Aprano <steve@pearwood.info> - 2014-03-18 04:52 +0000
Re: 'complex' function with string argument. Chris Angelico <rosuav@gmail.com> - 2014-03-18 15:59 +1100
Re: 'complex' function with string argument. Mark H Harris <harrismh777@gmail.com> - 2014-03-18 11:14 -0500
Re: 'complex' function with string argument. wxjmfauth@gmail.com - 2014-03-19 00:30 -0700
Re: 'complex' function with string argument. Marko Rauhamaa <marko@pacujo.net> - 2014-03-19 10:51 +0200
Re: 'complex' function with string argument. wxjmfauth@gmail.com - 2014-03-19 02:52 -0700
Re: 'complex' function with string argument. Marko Rauhamaa <marko@pacujo.net> - 2014-03-19 12:09 +0200
Re: 'complex' function with string argument. Ian Kelly <ian.g.kelly@gmail.com> - 2014-03-19 04:33 -0600
Re: 'complex' function with string argument. Marko Rauhamaa <marko@pacujo.net> - 2014-03-19 12:53 +0200
Re: 'complex' function with string argument. Ian Kelly <ian.g.kelly@gmail.com> - 2014-03-19 13:35 -0600
Re: 'complex' function with string argument. Skip Montanaro <skip@pobox.com> - 2014-03-19 06:04 -0500
Re: 'complex' function with string argument. wxjmfauth@gmail.com - 2014-03-19 07:35 -0700
Re: 'complex' function with string argument. Ian Kelly <ian.g.kelly@gmail.com> - 2014-03-19 12:45 -0600
Re: 'complex' function with string argument. Mark Dickinson <mdickinson@enthought.com> - 2014-03-17 17:55 +0000
Re: 'complex' function with string argument. Terry Reedy <tjreedy@udel.edu> - 2014-03-17 18:06 -0400
Re: 'complex' function with string argument. Skip Montanaro <skip@pobox.com> - 2014-03-17 18:59 -0500
Re: 'complex' function with string argument. Chris Angelico <rosuav@gmail.com> - 2014-03-18 11:16 +1100
Re: 'complex' function with string argument. Skip Montanaro <skip@pobox.com> - 2014-03-17 20:07 -0500
Re: 'complex' function with string argument. Christian Gollwitzer <auriocus@gmx.de> - 2014-03-18 08:04 +0100
Re: 'complex' function with string argument. Chris Angelico <rosuav@gmail.com> - 2014-03-18 18:11 +1100
Re: 'complex' function with string argument. Steven D'Aprano <steve@pearwood.info> - 2014-03-18 08:00 +0000
Re: 'complex' function with string argument. Christian Gollwitzer <auriocus@gmx.de> - 2014-03-18 09:21 +0100
Re: 'complex' function with string argument. Marko Rauhamaa <marko@pacujo.net> - 2014-03-18 16:00 +0200
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